Lifting mechanism for gang-plows.



T. J. GHANDONNET. I LIPTINGY MECHANISM FOR GANG PLOWS. APPLIOATION FILED JULY 21, 1911.

1,013,740. Patented Ja ,n.2,1912.

INVENTOR fzomacr J/Zawzmm ATTORNEYS WIT M58858 THOMAS J. CHANDONNET, OF WAUBUN, MINNESOTA.

LIFTING MECHANISM FOB GANG PLOWS.

Specification of Letters Patent. Application filed July 21, 1911. Serial No. 689,733.

Patented Jan. areas.

To all whom it may concem:

Be it known that I, THOMAS J. CHAN- DONNET, a citizen of the United States, and a resident of Waubun, in the county of Mahnomen and State of- Minnesota, have invented a new and Improved Lifting Mechanism for Gang-Flows, of which the following is a full, clear, and exact description.

The object of the present invention is to provide a gang-plow with a lifting apparatus operated by a fluid ressure cylinder mounted uponthe frame of the plow, or of apair of plows in a gang of plows, so that a particular plow, or pair of plows maybe raised at any time independently of'other plows in the gang of plows; and to enable the operator to finish the plowing of the field on a straight line, or substantially straight line; and to permit the plows to, independently of each other, rise and fall as they pass over uneven ground.

Reference is to be had to the accompanying drawings forming a part of this speci-' fication, in which similar characters of referenceindicate corresponding parts in all the views, and in which-'.-

Figure 1 shows in side elevation a pair of plows provided with the improved lifting device; Fig. 2 shows a vertical sectional view on the line ww in Fig. 1, looking in the direction of the arrow in that view; and Fig. 3 isa diagrammatic view illustrating the arrangement of piping where a gang of.

ten plows are arranged in pairs, each pair providedwith a lifter.

The plows A and their frames B may be of any usual or preferred construction,-

and as illustrated in the drawings, the may be arranged in pairs, one slightly in a vance of the other, so that, as shown in Fig. 3, a gang of such plows may be arranged on an oblique line, those at oneend operating in advance of those at the other. The lifting device comprises a fluid pressure cylinder C mounted upon a yoke C, which yoke is pivoted by means of bolts C to the frames B of a pair of plows. Within the cylinder Gas 2. piston D, at the upper end of-a piston rod d. The lower end 0 the piston'rod d carries a yoke E in which is mounted to re volve freely, a wheel e. Thenmovement of the piston within the cylinder positions the wheel 6 with relation to the workin lower ends of the plows A. If the sai wheel is forced downward against the surface of I the earth and below the 'worln'ng ends of the plows, the result is that the plows will be withdrawn from, and elevated above the ground, and also the position of the wheel with re- Iationtothe working end of the plows determines the depth to which the plows-may enter the ground. To limit the upward movement of the wheel, and thus regulate the depth'to which the plows may enter the ground, the piston rod (Z is provided with an adjustable collar d which may be placed at varying points along the piston rod, as

-required. The piston is acted upon by steam or compressed air, which is conducted thereto through a pipe F, and which leads into the upper end of the cylinder, as shown I clearl in Figs. 1 and 2 of the drawings.

' Re erring to Fig. 3 of the drawings, the triangular dotted line H represents the frame of the gang which will carry a-suitable source of supply of compressed air or steam. The main conductor pipe H leads from the source ofsupply to a cross pipe H from which are'conducted the pipes F, preferably rubber or flexible hose leading to metal pipes F connected to the cylinder C. Each of the ipes F will be controlled by a valve J, preferably a three-way valye, so that eachcylinder may be char ed w1th compressed air or steam or em tie 1nto the atmosphere, independently o the others,

and thus each pair of plows is raised or lowered independently of other pairs in the gang of plows. The yoke E supporting the wheel 0 will be strengthened and braced by means of links K, which at one end Wlll be connected to the yoke E, and at thezother to the frame B of the plow.

It is important to note that by placing the lifting means upon the plow itself, the v low is permitted to rise and fall to conorm to the unevenness of surface of the field, at the same time being independent of other plows in the gang of plows, which would not be the result if the lifting apparatus were'mounted on the frame of the gang of plows. a

Having thus described my invention, I claim as new and desire to secure by Letters Patent: I g

1. A plow, a supporting and gaging wheel, and a fluid pressure apparatus mounted on the frame of-the plow for pos tionmg the wheel with relation to the workmgend of the plow.

2. A gang plow comprising a plurality of plows, a fluid pressure lifting device ling the fluid pressure supply of a pair of mounted on the plows, and means or operplows. independent of adjacent pairs of ating said device to lift the plows indeplows. v pendently of each other. In testimony'whereof I have signed my 6 3. A gang plow, comprising a plurality name to this specification in the presence of 15 I I of-plows arranged in palrs, each palr cartwo subscribing witnesses.

rying a fluid pressure llfting device, a main THOMAS J. CHANDONN ET. conductor for conducting fluid under pres- Witnesses: sure from the frame of the gang of plows to D. E. KANE,

10 the lifting devices, and means for control- (bus. A. MAonus'soN. 

